简介：Afewdaysago,thetransmissionschemeforLongtanHydropowerStationhasbeendefinite.ThestationwillbeconnectedwiththeSouthernInterconnectedPowerNetworkthroughfivecircuitsof500kVoutgoinglines.TheyincludeonecircuittoHechi,twocircuitstoLiuzhouandtwocircuitstoPingguo.Aft

简介：InApril2005,theSouthernPowerGridCo.,Ltd.entrustedChinaPowerEngineeringConsultingGroupCorporationwithanevaluationofafeasibilitystudyreport(partofsystemtransmissionscheme)onthefirstUHVprogram-Yun-GuangDCtransmissionproject.Itsvoltageclassandtransmissioncapacityaretobe+_800kVand5000MWrespectively.ItsstartingpointwillbeinthenorthwestofKunmingandconvertersubstationwillbeinZengdongDistrictofGuangzhou.Evaluationexpertsheldthat,1)YunnanisrichinenergyresourcesavailabletobuildenergybasesandGuangdonghasalargemarketspacetoreceiveelectricityfromYunnan;2)the+800-kVDCtransmissiontechniqueiseconomicallyfeasible;

简介：EDlTOR’SNOTE:WehadpublishedanarticleonVol.1,No.1ofthisJournalentitled"Astudyontheschemesofpowertrons-missionfromThreeGorgesProjecttoEastChina",inwhichvariouspossibleoptionswerediscussedfromtheresearcher’spointofview.Thispaperwepresentherediscussesthesameproblembutfromtheplanner/designer’spointofview.Thesedifferentviewpointsaresurelyhelpfultothefinaldecisionofthehugeproject.WeexpectsomefurtherdiscussionsonthisproblemtobepublishedonourJournal.

简介：